Class UndoableDelegateCommand

Base class for undoable actions based on delegates.

Inheritance
System.Object
UndoableDelegateCommand
AsyncStateCommand
CompositeCommand
DrawCommand
Namespace: Telerik.Windows.Diagrams.Core
Assembly: Telerik.Windows.Diagrams.Core.dll

Syntax

public class UndoableDelegateCommand : Object, ICommand

Constructors

UndoableDelegateCommand(String, Action<Object>, Action<Object>, Predicate<Object>)

Initializes a new instance of the UndoableDelegateCommand class.

Declaration
public UndoableDelegateCommand(string name, Action<object> execute, Action<object> undo = null, Predicate<object> canExecute = null)
Parameters
System.String name

The name or title of the command.
System.Action<System.Object> execute

The redo or execute method.
System.Action<System.Object> undo

The undo or rollback method.
System.Predicate<System.Object> canExecute

The method returning whether the command can be executed.

Properties

Name

Gets or sets the name.

Declaration
public string Name { get; set; }
Property Value
System.String

The name.
Implements

Methods

CanExecute(Object)

Gets a value indicating whether this command can be executed.

Declaration
public virtual bool CanExecute(object state = null)
Parameters
System.Object state

Returns
System.Boolean

Implements

Execute(Object)

Executes an undoable action.

Declaration
public virtual void Execute(object state = null)
Parameters
System.Object state

Implements

Redo()

Executes an undoable action.

Declaration
public virtual void Redo()
Implements

Undo(Object)

Unwinds an undoable action.

Declaration
public virtual void Undo(object state = null)
Parameters
System.Object state

Implements

Extension Methods